geo·syn·chro·nous adjective \ˌjē-ō-ˈsiŋ-krə-nəs, -ˈsin-\
: being or having an orbit around the earth with a period equal to one sidereal day; specifically : geostationary
First Known Use of GEOSYNCHRONOUS
Seen & Heard
What made you want to look up geosynchronous? Please tell us where you read or heard it (including the quote, if possible).